[vtkusers] Convex hull visuzlization crash problem in qvtkWidget

[Clinton Stimpson]

The default vtkRenderWindowInteractor from New() doesn't work with Qt.
You should either get the interactor from QVTKWidget or make a 
QVTKInteractor.

Clint

On 01/15/2011 12:38 AM, Xiaopeng Yang wrote:
>
> Dear Members,
>
> I made a system by QT, VTK, and ITK. In the system, 10 convex hulls 
> are generated and visualized by the same vtkRenderer in a qvtkWidget. 
> After visualization, the interaction function does not work. I could 
> not drag and rotate the convex hulls. But I can zoom in and out 
> through the mouse wheel. Then after 2 or 3 seconds, the program 
> crashed out. I tried many different ways to solve the problem since 
> last weekend, however, still I did not succeed yet. I would appreciate 
> a lot if anyone can give me some advice. I attach the code here for 
> reference. Thank you very much!
>
>       if(seg_no == 0)
>
>        {
>
> for (i = 0; i < spl_max; i++)
>
>               {
>
>                      
> points1->InsertNextPoint(segment_point_list[i][0], 
> segment_point_list[i][1], segment_point_list[i][2]);
>
>               }
>
>               polydata1->SetPoints(points1);
>
>               delaunay3D1->SetInput (polydata1);
>
>               delaunay3D1->Update();
>
>               
> delaunayMapper1->SetInputConnection(delaunay3D1->GetOutputPort());
>
>               delaunayActor1->SetMapper(delaunayMapper1);
>
>               delaunayActor1->GetProperty()->SetColor(1,0,0);
>
>        }
>
> else if (seg_no == 1)
>
>        {
>
> for (i = 0; i < spl_max; i++)
>
>               {
>
>                      
> points2->InsertNextPoint(segment_point_list[i][0], 
> segment_point_list[i][1], segment_point_list[i][2]);
>
>               }
>
>               polydata2->SetPoints(points2);
>
>               delaunay3D2->SetInput (polydata2);
>
>               
> delaunayMapper2->SetInputConnection(delaunay3D2->GetOutputPort());
>
>               delaunayActor2->SetMapper(delaunayMapper2);
>
>               delaunayActor2->GetProperty()->SetColor(1,1,0);
>
>        }
>
> ...
>
> vtkSmartPointer<vtkRenderWindow> renderWindow      = 
> vtkSmartPointer<vtkRenderWindow>::New();
>
> renderWindow = this->ui->qvtkWidget_4->GetRenderWindow();
>
> renderWindow->AddRenderer(delaunayRenderer);
>
> vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = 
> vtkSmartPointer<vtkRenderWindowInteractor>::New();
>
> renderWindowInteractor->SetRenderWindow(renderWindow);
>
> delaunayRenderer->AddActor(delaunayActor1);
>
> delaunayRenderer->AddActor(delaunayActor2);
>
> delaunayRenderer->AddActor(delaunayActor3);
>
> delaunayRenderer->AddActor(delaunayActor4);
>
> delaunayRenderer->AddActor(delaunayActor5);
>
> delaunayRenderer->AddActor(delaunayActor6);
>
> delaunayRenderer->AddActor(delaunayActor7);
>
> delaunayRenderer->AddActor(delaunayActor8);
>
> delaunayRenderer->AddActor(delaunayActor9);
>
> delaunayRenderer->AddActor(delaunayActor10);
>
> delaunayRenderer->SetBackground(1,1,1);
>
> renderWindow->Render();
>
> renderWindowInteractor->Initialize();
>
> renderWindowInteractor->Start();
>
> }
>
>
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